Wastewater Collection


- Centralised and decentralised wastewater collection, for sewage and storm water run-off from public grounds and industry, including storm water harvesting and groundwater recharge
- Hydrodynamic simulation and modelling of sewer networks, including simulation of discharge loads from storm water-tank overflow (especially for COD)
- Rehabilitation and renewal of existing sewer systems
- Engineering and design for new connections in new housing and industrial settlements
- General wastewater management plans (Generalentwässerungspläne, GEP), according to public standards
- Wastewater management concepts (Wastewater treatment concept) according to public standards


Project Examples



Renewal of the main sewage trunk "Bommern" with manned pipe jacking
- Client: Wastewater Utility of the City of Witten (ESW)
- Duration: 2001 - 2004
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Renewal of the main trunk under a city main road (diameter DN 1400, length 1,100 m), mainly with manned pipe jacking; all soil conditions including floating sand, rocks, clay and gravel existing, which had to be handled; Construction of 135 house connections, mainly in underground (no dig) technology
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Delivered by the Consultant: Design, tender document and procurement organisation, construction and supervision, co-ordination of blasting operations construction supervision


Construction of a new wastewater pressure pipeline in "Dörnberg-Ehlen"
- Client: Municipality of Habichtswald, Hessen
- Duration: 1998 - 2003 plus after-sales service
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Construction of a new wastewater pressurised pipe (length 3.8 km, diameter DA 280) including pumping station and 2 intermediate pumping stations feeding the house connection
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Delivered by the Consultant: Design, tender, procurement organisation, construction supervision and general consultancy


Asset analysis and evaluation, Dresden
- Client: Wastewater Utility of the City of Dresden, 650,000 p.e
- Duration: since 2003, ongoing assignment
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1,700 km of sewer length
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Delivered by the Consultant: Analysis and evaluation of sewer assets within the municipal sewer line, following engineering standards as well as requests from the financing banks


Sewer rehabilitation "Am Portenhövel", Emmerich at the Rhine
- Client: Gelsenwasser AG
- Contracted duration of the assignment: 2005 - 2008, extended for another 5 years until 2013
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Delivered: Renewal of sewers DN 300 and DN 400; utilising materials like GFRP (glass-fibre reinforced plastics); length of the sewer 220.20 m
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Delivered by the Consultant: All parts of engineering design from base design to final documentation, including construction supervision etc. (phases 1 - 9 of the German HOAI, regulation for chartered engineers)


Sewer renewal "Von-Bodelschwingh-Straße", Emmerich at the Rhine
- Client: Gelsenwasser AG
- Contracted duration of the assignment: 2005 - 2008, extended for another 5 years until 2013
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Construction of a storm water retention tank, with dry weather ditch and automated water flush cleaning system "mainly in diameters DN 1200 and DN 1400; applied materials: concrete and others; length of the sewer: 224.80 m
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Delivered by the Consultant: All parts of engineering design from base design to final documentation, including construction supervision etc. (phases 1 - 9 of the German HOAI, regulation for chartered engineers)


Sewer renovation, repairs and renewal in the protected water catchment area Emmerich at the Rhine
- Client: Gelsenwasser AG
- Contracted duration of the assignment: 2005 - 2008, extended for another 5 years until 2013
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Sewer renovation in DN 300 to DN 500 with needle felt inliner (stabilised through hot water); length of the sewer 5,762.30 m
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Reparation of sewer with the so-called "Janßen Pipe Rehabilitation System with Fregmentations", utilisation of short liners, branch piece injection; length of the sewer 818.44 m
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Sewer renovation in DN 300 and DN 400; utilised pipe material GFRP (glass-fibre reinforced plastics); length of the sewer 169.02 m
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Delivered by the Consultant: All parts of engineering design from base design to final documentation, including construction supervision etc. (phases 1 - 9 of the German HOAI, regulation for chartered engineers)


Renovation of the sewer "Rheinpromenade", Emmerich at the Rhine
- Client: Gelsenwasser AG
- Contracted duration of the assignment: 2005 - 2008, extended for another 5 years until 2013
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Renovation of a sewer near the famous Rhine-promenade in Emmerich at the Rhine; first spiral wound lining in Europe, PEHD in DN 1050; length of the sewer 577.06 m
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Delivered by the Consultant: All parts of engineering design from base design to final documentation, including construction supervision etc. (phases 1 - 9 of the German HOAI, regulation for chartered engineers)


Renewal of the sewer "Van-Gülpen-" and "Görresstraße", Emmerich at the Rhine
- Client: Gelsenwasser AG
- Contracted duration of the assignment: 2005 - 2008, extended for another 5 years until 2013
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Renewal of the sewer in DN 800 and DN 900 as well as DN 700; utilised material GFRP (glass-fibre reinforced plastics); length of the sewer 303.70 m und 154.85 m
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Special issue: Crossing of a railroad of the German Netz-AG, line no. 2270
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Delivered by the Consultant: All parts of engineering design from base design to final documentation, including construction supervision etc. (phases 1 - 9 of the German HOAI, regulation for chartered engineers)


Sewer renovation "Sprickmann-Kerkerinck-Straße", Emmerich at the Rhine
- Client: Gelsenwasser AG
- Contracted duration of the assignment: 2005 - 2008, extended for another 5 years until 2013
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Renewal of sewer in DN 700; utilised material GFRP (glass-fibre reinforced plastics); length of the sewer 161.90 m
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Delivered by the Consultant: All parts of engineering design from base design to final documentation, including construction supervision etc. (phases 1 - 9 of the German HOAI, regulation for chartered engineers)


Sewer renewal "Alter Markt", Emmerich at the Rhine
- Client: Gelsenwasser AG
- Contracted duration of the assignment: 2005 - 2008, extended for another 5 years until 2013
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Renewal of sewer in DN 300; utilised material GFRP (glass-fibre reinforced plastics); length of the sewer 58.97 m
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Delivered by the Consultant: All parts of engineering design from base design to final documentation, including construction supervision etc. (phases 1 - 9 of the German HOAI, regulation for chartered engineers)


Sewer renewal "Fischerort", Emmerich at the Rhine
- Client: Gelsenwasser AG
- Contracted duration of the assignment: 2005 - 2008, extended for another 5 years until 2013
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Renewal of sewer in DN 300; utilised material GFRP (glass-fibre reinforced plastics); length of the sewer 79.23 m
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Delivered by the Consultant: All parts of engineering design from base design to final documentation, including construction supervision etc. (phases 1 - 9 of the German HOAI, regulation for chartered engineers)


Sewer renewal at selected locations "Neumarkt", Emmerich at the Rhine
- Client: Gelsenwasser AG
- Contracted duration of the assignment: 2005 - 2008, extended for another 5 years until 2013
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Sewer renewal at selected locations in DN 150 to DN 300; utilised material PVC and concrete; length of the sewer 69.14 m
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Delivered by the Consultant: All parts of engineering design from base design to final documentation, including construction supervision etc. (phases 1 - 9 of the German HOAI, regulation for chartered engineers)


Sewer renewal "Seminarstraße", Emmerich at the Rhine
- Client: Gelsenwasser AG
- Contracted duration of the assignment: 2005 - 2008, extended for another 5 years until 2013
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Sewer renewal in DN 300 with needle felt inliner (stabilised through hot water); length of the sewer 301.58 m
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Delivered by the Consultant: All parts of engineering design from base design to final documentation, including construction supervision etc. (phases 1 - 9 of the German HOAI, regulation for chartered engineers)


Sewer renewal at selected locations and Development measure in various streets in Hüthum and Elten, near to Emmerich at the Rhine
- Client: Gelsenwasser AG
- Contracted duration of the assignment: 2005 - 2008, extended for another 5 years until 2013
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Sewer renewal at selected locations in DN 300 to DN 400; utilised pipe material vitrified clay (pipes); length of the sewer 96.90 m
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Development measure in DN 200 including installation of inspection shafts; utilised pipe material vitrified clay (pipes); length of the sewer 205.12 m
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Delivered by the Consultant: All parts of engineering design from base design to final documentation, including construction supervision etc. (phases 1 - 9 of the German HOAI, regulation for chartered engineers)


Sewer repair "Hegius-", "Ingenkamp-", "Kämpchenstraße", "Hoher Weg" and "In der Laar", Emmerich at the Rhine
- Client: Gelsenwasser AG
- Contracted duration of the assignment: 2005 - 2008, extended for another 5 years until 2013
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Sewer repair with Janßen Pipe Rehabilitation System with Kurzlinern, branch piece injection and various robot measures; length of the sewer 1,058.26 m
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Delivered by the Consultant: All parts of engineering design from base design to final documentation, including construction supervision etc. (phases 1 - 9 of the German HOAI, regulation for chartered engineers)


Sewer renewal and renovation "Hackensteege", Emmerich at the Rhine
- Client: Gelsenwasser AG
- Contracted duration of the assignment: 2005 - 2008, extended for another 5 years until 2013
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Sewer renewal in DN 300; utilised pipe material GFRP (glass-fibre reinforced plastics); length of the sewer 64.64 m
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Sewer renovation in oval cross section 200/300 with GFRP(glass-fibre reinforced plastics)-Inliner (stabilised through light); length of the sewer 36 m
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Delivered by the Consultant: All parts of engineering design from base design to final documentation, including construction supervision etc. (phases 1 - 9 of the German HOAI, regulation for chartered engineers)


Sewer renewal and repair "Am Hasenberg", "Am Flachsacher" and "Dachsweg", Emmerich at the Rhine
- Client: Gelsenwasser AG
- Contracted duration of the assignment: 2005 - 2008, extended for another 5 years until 2013
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Sewer renewal in DN 300 to DN 600; utilised pipe material GFRP (glass-fibre reinforced plastics); length of the sewer 400.60 m
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Sewer repair with Shortliner and branch piece injection as well as various robot measures, length of the sewer 566.71 m
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Delivered by the Consultant: All parts of engineering design from base design to final documentation, including construction supervision etc. (phases 1 - 9 of the German HOAI, regulation for chartered engineers)


Sewer renewal "Hinter dem Engel", Emmerich at the Rhine
- Client: Gelsenwasser AG
- Contracted duration of the assignment: 2005 - 2008, extended for another 5 years until 2013
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Sewer renewal in DN 300; utilised pipe material GFRP (glass-fibre reinforced plastics); length of the sewer 132.75 m
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Delivered by the Consultant: All parts of engineering design from base design to final documentation, including construction supervision etc. (phases 1 - 9 of the German HOAI, regulation for chartered engineers)


Sewer renewal "Kleiner Wall", Emmerich at the Rhine
- Client: Gelsenwasser AG
- Contracted duration of the assignment: 2005 - 2008, extended for another 5 years until 2013
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Sewer renewal in DN/OD 315; utilised material PP; length of the 204.46 m
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Delivered by the Consultant: All parts of engineering design from base design to final documentation, including construction supervision etc. (phases 1 - 9 of the German HOAI, regulation for chartered engineers)


Sewer renewal "Speelberger Straße", Emmerich at the Rhine
- Client: Gelsenwasser AG
- Contracted duration of the assignment: 2005 - 2008, extended for another 5 years until 2013
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Sewer renewal in DN 400 und DN 500; utilised material GFRP (glass-fibre reinforced plastics); length of the sewer 103.85 m
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Delivered by the Consultant: All parts of engineering design from base design to final documentation, including construction supervision etc. (phases 1 - 9 of the German HOAI, regulation for chartered engineers)


Sewer and road renewal "Dr.-Robbers-Straße", Emmerich at the Rhine
- Client: Gelsenwasser AG
- Contracted duration of the assignment: 2005 - 2008, extended for another 5 years until 2013
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Sewer and road renewal in DN/OD 315 und 400; utilised pipe material PP; length of the sewer 240.59 m; planning of roads and pavements
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Delivered by the Consultant: All parts of engineering design from base design to final documentation, including construction supervision etc. (phases 1 - 9 of the German HOAI, regulation for chartered engineers)


Sewer renewal "Gerhard-Storm-" und "Dederich-straße", Emmerich at the Rhine
- Client: Gelsenwasser AG
- Contracted duration of the assignment: 2005 - 2008, extended for another 5 years until 2013
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Sewer renewal in DN 300 to DN 500; utilised pipe material GFRP (glass-fibre reinforced plastics); length of the sewer 450.46 m, 20 m of them with pneumatic drilling
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Delivered by the Consultant: All parts of engineering design from base design to final documentation, including construction supervision etc. (phases 1 - 9 of the German HOAI, regulation for chartered engineers)


Sewer renovation and repair "Speelberger-", "Königs-", "Hubert-Fink-" and "Wassenbergstraße", Emmerich at the Rhine
- Client: Gelsenwasser AG
- Contracted duration of the assignment: 2005 - 2008, extended for another 5 years until 2013
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Sewer renovation in DN 300 to DN 600 as well as oval cross section 300/450 with GFRP (glass-fibre reinforced plastics)-Inliner (stabilised through light); length of the sewer 433.92 m
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Sewer repair with cap profiles und branch piece injection as well as various robot measures; length of the sewer 75.76 m
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Delivered by the Consultant: All parts of engineering design from base design to final documentation, including construction supervision etc. (phases 1 - 9 of the German HOAI, regulation for chartered engineers)


Sewer renewal "Wassenbergstraße", Emmerich at the Rhine
- Client: Gelsenwasser AG
- Contracted duration of the assignment: 2005 - 2008, extended for another 5 years until 2013
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Sewer renewal in DN 500 to DN 700; utilised pipe material GFRP (glass-fibre reinforced plastics); length of the sewer 480.32 m
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Special Condition: Many tangential branches due to house connections, which flow into the floor
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Delivered by the Consultant: All parts of engineering design from base design to final documentation, including construction supervision etc. (phases 1 - 9 of the German HOAI, regulation for chartered engineers)